Many glue less hardwood may be assembled and dis-assembled several times. Carefully disassembled glue less joints will retain their original locking integrity during re-assembly.
New replacement plank(s) should be acclimated in the replacement area for at least 72 hours, to allow them to equalize to the conditions of the flooring in the room where the replacement(s) will take place.
Remove baseboard, wall base, or quarter-round as needed to replace the damaged board(s). Take the flooring apart, 1 row at a time, by lifting the rows to detach them; then separating the individual boards.
Be sure to stack the individual planks in the proper order for re-installation. This usually eliminates the need to cut planks for start or end of the row lengths.
Replace the damaged board with a piece from the edge of the original installation.
Insert the properly acclimated new plank(s) along the outer edge of the original flooring installation during re-assembly. This minimizes the chance that a newer plank might stand out from the wear condition of the original installation.
Re-install the baseboard, wall base, or quarter round, and the replacement-repair is complete.